Re: [PATCH PR62151]Fix uninitialized register issue caused by distribute_notes in combine pass

[Jeff Law]

On 09/01/14 11:50, Segher Boessenkool wrote:

Another question is why is r84 set twice in the first place?
Various transformations can set that kind of situation up.

Sure -- but also lazy expanders can reuse a register instead of doing
gen_reg_rtx.  Which is why I asked :-)
Which comes back to my original train of thought.  Fix the handling of 
r84 and disallow the combination when we've got multiple sets of a pseudo.

jeff